You know.....I never tested different frame materials with it....hmmm? From experience, soft cast iron and bronze always ran better than stainless, aluminum or plastic in coils. I never gave it a thought to..... I get focused and.....hmmm. Thanks, good idea!
Off topic....
Yeah, I almost became a physics major, on to teaching. I worked my way thru college tutoring math and physics.... loved the hell out of it.....had to make my choice between math, physics or engineering. The mad scientist stuff?......I've got the hair for it....
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